Cryptology ePrint Archive: BibTeX Citation of Report 2007/176

@misc{cryptoeprint:2007:176,
    author = {Elena Andreeva and Gregory Neven and Bart Preneel and Thomas Shrimpton},
    title = {Seven-Property-Preserving Iterated Hashing: ROX
},
    howpublished = {Cryptology ePrint Archive, Report 2007/176},
    year = {2007},
    note = {\url{http://eprint.iacr.org/}},
}

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.